Posted by Will (in IL) on Saturday, February 23, 2008 at 00:07:38 :
In Reply to: 4 wheeler power wagon posted by roger king on Thursday, February 21, 2008 at 20:29:57 :
I just installed this one on my M, and I believe it to be a 15 psi cap. My old original didn't hold any pressure, but I had the radiator re-cored and I'm fairly confident the shop pressure tested the radiator, as they didn't know to do other wise.